Some were high-profile, some may have just been high.  Here’s ten hookups you may have known about and some you may have missed.

1. Lindsay Lohan and Samantha Ronson

2. Jessica Simpson and Tony Romo

3. Jennifer Aniston and John Mayer

4. Rihanna and Chris Brown

5. Mariah Carey and Nick Cannon

6. Sienna Miller and Balthazar Getty

7. Karissa and Kristina Shannon and Hugh Hefner

8. Jennifer Hudson and David “Punk” Otunga

9. Tila Tequila and Justin Long

10. The entire cast of Gossip Girl